• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Sam Altman

Sam Altman’s decade-old investment in Reddit is now worth over a billion dollars

Paolo Confino
By
Paolo Confino
Paolo Confino
Reporter
Down Arrow Button Icon
Paolo Confino
By
Paolo Confino
Paolo Confino
Reporter
Down Arrow Button Icon
October 30, 2024, 1:49 PM ET
OpenAI CEO Sam Altman
OpenAI CEO Sam Altman invested in Reddit several times, starting in 2014. Stefano Guidi—Getty Images

OpenAI CEO Sam Altman’s stake in Reddit is now worth over a billion dollars thanks to a rally in the company’s stock price after an excellent earnings call. 

Recommended Video

Altman owns 12.2 million shares of Reddit. With the company’s share price now sitting at $114 a share, that makes Altman’s stake in Reddit worth about $1.4 billion. Reddit shares soared 40% on Wednesday on the back of an earnings report that projected a rosy future. It reported 100 million daily users and had turned a profit for the first time. 

All that made for a lucrative run-up for Altman and Reddit’s other shareholders, which include a hodgepodge of various investors: Chinese tech company Tencent; Advance Publications, the owner of Condé Nast; and Vy Capital, a highly secretive Dubai-based investment firm that funded part of Elon Musk’s acquisition of Twitter. 

Reddit is hardly Altman’s only savvy investment. Before becoming one of the business and tech world’s most famous executives for his leadership at OpenAI, Altman was a prominent investor in Silicon Valley. His perch atop the famed startup accelerator Y Combinator gave him ready access to a stream of young and talented executives, eager for his guidance and money. Some of Altman’s most successful bets include investments in startups turned behemoths like Airbnb, Uber, and Stripe.

Altman crossed paths with Reddit in the company’s earliest days. In 2005, Reddit cofounders Alexis Ohanian, Steve Huffman, and Aaron Swartz were in the inaugural class (or “batch” as it’s referred to) of Y Combinator, when it was still run by cofounder Paul Graham. At the time, Altman was working on his first startup, called Loopt. In 2014, Altman would become the president of Y Combinator, giving him a first look at what would become prominent startups in their infancy. 

Also in 2014, Altman led Reddit’s $50 million Series B funding. In a blog post announcing the investment, Altman harkened back to the time he’d spent with Reddit’s cofounders when they were at Y Combinator. 

“I was probably in the first dozen people to use the site, and I shudder to imagine the number of hours I have spent there,” Altman wrote. 

From there, Altman kept investing in Reddit. In 2021, he put in $50 million during Reddit’s Series E raise. Later that year, Altman added $10 million into Reddit’s coffers, as the company kept raising money. His investments earned him a major stake in Reddit, including voting shares.

When Reddit went public in March, Altman ended up having even more shares than Huffman, the company’s CEO, according to Reddit’s IPO prospectus. 

Altman was also on the board of Reddit through 2021. In January 2022, Reddit announced he would step down from the board after serving for seven years. 

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Author
Paolo Confino
By Paolo ConfinoReporter

Paolo Confino is a former reporter on Fortune’s global news desk where he covers each day’s most important stories.

See full bioRight Arrow Button Icon

Latest in

FAA
PoliticsAviation
FAA head hasn’t sold his stake in an airline despite promises to do so, Democratic Senator claims
By Josh Funk and The Associated PressDecember 12, 2025
7 minutes ago
Amtrak
PoliticsAmtrak
Amtrak is slashing executive bonuses to give out $900 apiece to over 18,000 rank-and-file workers
By Safiyah Riddle and The Associated PressDecember 12, 2025
11 minutes ago
Price of silver for December 12, 2025
Personal Financesilver
Current price of silver as of Friday, December 12, 2025
By Joseph HostetlerDecember 12, 2025
21 minutes ago
McDonald
RetailRetail
Lululemon CEO Calvin McDonald to step down as quarterly profit dips 13%
By Anne D'Innocenzio and The Associated PressDecember 12, 2025
22 minutes ago
farmers
EconomyTariffs and trade
Bailed-out farmers don’t want to live on Trump welfare: ‘they don’t want to go to the mailbox and get a check from the government’
By Josh Funk, Mark Vancleave and The Associated PressDecember 12, 2025
24 minutes ago
PBS
PoliticsMedia
Arkansas becomes first state to cut ties with PBS, saying $2.5 million membership dues ‘not feasible’
By The Associated PressDecember 12, 2025
26 minutes ago

Most Popular

placeholder alt text
Success
At 18, doctors gave him three hours to live. He played video games from his hospital bed—and now, he’s built a $10 million-a-year video game studio
By Preston ForeDecember 10, 2025
2 days ago
placeholder alt text
Investing
Baby boomers have now 'gobbled up' nearly one-third of America's wealth share, and they're leaving Gen Z and millennials behind
By Sasha RogelbergDecember 8, 2025
4 days ago
placeholder alt text
Success
Palantir cofounder calls elite college undergrads a ‘loser generation’ as data reveals rise in students seeking support for disabilities, like ADHD
By Preston ForeDecember 11, 2025
22 hours ago
placeholder alt text
Economy
‘We have not seen this rosy picture’: ADP’s chief economist warns the real economy is pretty different from Wall Street’s bullish outlook
By Eleanor PringleDecember 11, 2025
1 day ago
placeholder alt text
Uncategorized
Transforming customer support through intelligent AI operations
By Lauren ChomiukNovember 26, 2025
16 days ago
placeholder alt text
Economy
‘Be careful what you wish for’: Top economist warns any additional interest rate cuts after today would signal the economy is slipping into danger
By Eva RoytburgDecember 10, 2025
2 days ago
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.